/*
 * Copyright (c) 2023 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**---
 description: >
    A non-generic signature is a candidate when
    the function call has no type arguments, and
    the signature is applicable with respect to the argument list of the function call.
 module: ESNext
 isCurrent: true
 ---*/


import { Assert } from '../../../../../suite/assert.js'

function add(): number;
function add(x: number): number;
function add(x: number, y: number): number;
function add(x?: number, y?: number): number {
  let sum: number = 0;
  if (x) {
    sum += x;
  }
  if (y) {
    sum += y;
  }
  return sum;
}
Assert.equal(add(), 0);
Assert.equal(add(1), 1);
Assert.equal(add(1, 1), 2);